<template>
  <div>
      <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>分类参数</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
        <!-- 头部警告区 -->
        <el-alert
            title="注意:只允许第三分类设置"
            :closable="false"
            show-icon
            type="warning">
        </el-alert>
        <!-- 选择商品分类区 -->
        <el-row class="cat_opt" :gutter="10">
            <el-col>
                <span style="margin-right:10px">选择商品分类: </span>
                <el-cascader
                   v-model="selectedCateKeys"
                   :options="catelist"
                   :props="cateProps"
                   expand-trigger="hover"
                   @change="handleChange">
                </el-cascader>
                <!-- 级联选择框 -->
            </el-col>
        </el-row>
        <!-- tab页签 -->
        <el-tabs v-model="activeName" @tab-click="handleTabClick">
            <!-- 添加动态参数 -->
            <el-tab-pane label="动态参数" name="many">
                <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDiavalogVisible =true">添加参数</el-button>
                <!-- 动态参数表格 -->
                <el-table
                    :data="manyTableData"
                    style="width:100%">
                     <!-- 张开行 -->
                    <el-table-column type="expand">
                        <template slot-scope="scope">
                            <!-- 循环TAG标签 -->
                            <el-tag closable @close ="handleClosable(i,scope.row)" v-for="(item,i) in scope.row.attr_vals" :key="i">{{item}}</el-tag>
                            <el-input
                              class="input-new-tag"
                              v-if="scope.row.inputVisible"
                              v-model="scope.row.inputValue"
                              ref="saveTagInput"
                              size="small"
                              @keyup.enter.native="handleInputConfirm(scope.row)"
                              @blur="handleInputConfirm(scope.row)"
                            >
                            </el-input>
                            <el-button v-else class="button-new-tag" size="small" @click="showInput(scope.row)">+ New Tag</el-button>
                        </template>
                    </el-table-column>
                    <el-table-column type="index"></el-table-column> 
                    <el-table-column
                        prop="attr_name"
                        label="参数名称">
                    </el-table-column>
                    <el-table-column
                        label="操作">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini"  @click="showEditDialog(scope.row.attr_id)">编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini"  @click="removeParame(scope.row.attr_id)" >删除</el-button>
                    </template>
                    </el-table-column>
                </el-table>
            </el-tab-pane>
            <!-- 添加静态属性 -->
            <el-tab-pane label="静态属性" name="only">
                <el-button type="primary" size="mini" :disabled="isBtnDisabled" @click="addDiavalogVisible =true">添加属性</el-button>
                <!-- 静态表格 -->
                <el-table
                    :data="onlyTableData"
                    style="width: 100%">
                    <el-table-column type="index"></el-table-column>
                    <!-- 张开行 -->
                    
                    <el-table-column type="expand"></el-table-column>
                    <el-table-column
                        prop="attr_name"
                        label="属性名称"
                        width="auto">
                    </el-table-column>
                    <el-table-column
                        label="操作"
                        width="auto">
                    <template slot-scope="scope">
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.attr_id)" >编辑</el-button>
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeParame(scope.row.attr_id)" >删除</el-button>
                    </template>
                    </el-table-column>
                </el-table>
            </el-tab-pane>
        </el-tabs>
    </el-card>
    <!-- 添加框 -->
    <el-dialog
        :title="'添加' + titleText"
        :visible.sync="addDiavalogVisible"
        @close="closeDialog"
        width="50%">
        <el-form ref="addFormRef" :rules="addFormRules" :model="addForm" label-width="100px">
            <el-form-item :label="titleText" prop="attr_name">
                <el-input v-model="addForm.attr_name" placeholder=""></el-input>
            </el-form-item>
        </el-form>
        <div slot="footer">
            <el-button @click="addDiavalogVisible = false">取 消</el-button>
            <el-button type="primary" @click="addParams">确 定</el-button>
        </div>
    </el-dialog>
    <!-- 修改参数对话框 -->
    <el-dialog
        :title="'修改' + titleText"
        :visible.sync="editDiavalogVisible"
        @close="editcloseDialog"
        width="50%">
        <el-form ref="editFormRef" :rules="editFormRules" :model="editForm" label-width="100px">
            <el-form-item :label="titleText" prop="attr_name">
                <el-input v-model="editForm.attr_name" placeholder=""></el-input>
            </el-form-item>
        </el-form>
        <div slot="footer">
            <el-button @click="editDiavalogVisible = false">取 消</el-button>
            <el-button type="primary" @click="editParams">确 定</el-button>
        </div>
    </el-dialog>
  </div>
</template>

<script>
export default {
    data() {
        return {
             // 商品分类的数量
            catelist:[],
            cateProps:{
               value:'cat_id', 
               label:'cat_name',
               children:'children'
            },
            // 级联选择框
            selectedCateKeys:[],
            // 被激活的页签名称
            activeName:'many',
            // 动态参数
            manyTableData:{},
            // 静态参数
            onlyTableData:{},
            // 控制添加对话框的显示与隐藏
            addDiavalogVisible:false,
            editDiavalogVisible:false,
            addForm:{},
            editForm:{},
            addFormRules:{
                attr_name:[
                    {required:true,message:'请输入参数名称',trigeer:'blur'}
                ]
            },
            editFormRules:{
                attr_name:[
                    {required:true,message:'请输入参数名称',trigeer:'blur'}
                ]
            },
            
        }
    },
    created(){
        this.getCatelist()
    },
    computed:{
        // 按钮是否禁用
        isBtnDisabled(){
            if(this.selectedCateKeys.length!==3){
                return true
            }
            return false
        },
        // 当前选中的三级分类id
        cateId(){
            if(this.selectedCateKeys.length ===3){
                return this.selectedCateKeys[2]
            }
            return null
        },
        titleText(){
            if(this.activeName==='many'){
                return "动态参数"
            }
            return "静态属性"
        }
    },
    methods:{
        // 获取商品分类
        async getCatelist(){
          const {data:res} = await this.$http.get('categories')
          if(res.meta.status !==200) return this.$message.error('获取商品分类失败')
          this.catelist = res.data
        //   console.log(this.catelist);
        },
        // 级联选择框选择变化
        handleChange(){
           this.getParamsData()
        },
        async getParamsData(){
             if(this.selectedCateKeys.length !==3){
                this.selectedCateKeys = []
                this.manyTableData = []
                this.onlyTableData = []
                return
            }
            // 选中三级
            // console.log(this.cateId);
            // 根据所选分类和所处面板获取对应参数
             const {data:res} = await this.$http.get(`categories/${this.cateId}/attributes`,{
               params:{sel:this.activeName}
                })
                if(res.meta.status!==200){
                    return this.$message.error('获取参数列表失败')
                }
                
                res.data.forEach(item =>{
                    item.attr_vals = item.attr_vals ? item.attr_vals.split(',') : []
                    // 添加控制文本框的显示与隐藏
                    item.inputVisible = false
                    item.inputValue = ''
                })
                console.log(res.data);
                if(this.activeName ==='many'){
                    this.manyTableData =res.data
                }else{
                    this.onlyTableData = res.data
                }
        },
        // tab页签点击事件
        handleTabClick(){
            this.getParamsData()
            // console.log(this.activeName);
        },
        closeDialog(){
            this.$refs.addFormRef.resetFields()
        },
        editcloseDialog(){
            this.$refs.editFormRef.resetFields()
        },
        // 点击按钮添加
        addParams(){
            this.$refs.addFormRef.validate(async valid =>{
               if(!valid) return
               const {data:res} = await this.$http.post(`categories/${this.cateId}/attributes`,{
                   attr_name:this.addForm.attr_name,
                   attr_sel:this.activeName
               }) 
               if(res.meta.status !==201){
                   return this.$message.error('添加参数失败')
               }
               this.$message.success('添加参数成功!')
               this.addDiavalogVisible = false
               this.getParamsData()
            })
        },
        editParams(){
            this.$refs.editFormRef.validate(async valid =>{
                if(!valid) return
                const{data:res} = await this.$http.put(`categories/${this.cateId}/attributes/${this.editForm.attr_id}`,{
                attr_name:this.editForm.attr_name,
                attr_sel:this.activeName
            })
                if(res.meta.status !==200){
                    return this.$message.erroe('修改参数失败!')
                }
                this.$message.success('修改参数成功!')
                this.getParamsData()
                 this.editDiavalogVisible = false
            })
        },
        // 点击按钮修改对话框
        async showEditDialog(attr_id){
           const{data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${attr_id}`,{params:{
                attr_sel:this.activeName
            }})
            if(res.meta.status !==200){
                return this.$message.error('获取失败')
            }
            this.editForm = res.data
            this.editDiavalogVisible = true
        },
        // 删除功能
        async removeParame(attr_id){
            console.log('dasdsdas');
            const confirmResult =  await this.$confirm('此操作将永久删除该参数, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
            }).catch(err =>err)

            if(confirmResult !=='confirm'){
                return this.$message.info('已取消')
            }
            this.$http.delete(`categories/${this.cateId}/attributes/${attr_id}`)
            if(res.meta !==200){
                return this.$message.error('删除失败')
            }
            this.getParamsData() 
            this.message.success('删除成功！')
            
        },
        // 文本框失去焦点或按下确定
         handleInputConfirm(row){
            if(row.inputValue.trim().length ===0){
                row.inputValue = ''
                row.inputVisible = false
                return
            }
            row.attr_vals.push(row.inputValue.trim())
            row.inputValue = ''
            row.inputVisible = false
            this.saveAttr(row)

        },
      async saveAttr(row){
              const{data:res} = await this.$http.get(`categories/${this.cateId}/attributes/${row.attr_id}`,
             {
                 attr_name:row.attr_name,
                 attr_sel:row.attr_sel,
                 attr_vals:row.attr_vals.join(',')
             })
             if(res.meta.status !==200){
                 return this.$message.error('修改参数失败！')
             }
             this.$message.success('修改成功！')
        },
        // 点击按钮
        showInput(row){
            row.inputVisible = true
             this.$nextTick(_ => {
             this.$refs.saveTagInput.$refs.input.focus();
         });
        },
        handleClosable(i,row){
            row.attr_vals.splice(i,1)
            this.saveAttr(row)
        }
    }
}
</script>

<style lang="less" scoped>
.cat_opt{
    margin: 15px 10px;
}
.el-tag{
    margin: 5px;
}
.input-new-tag{
    width: 120px;
}
</style>